Sintering nuclear fuel pellets

Details Sintering nuclear fuel pellets Sintering nuclear fuel pellets

1977-03-14

1979-06-19

Nelson, Peter A.

Plastic and nonmetallic article shaping or treating: processes

Shaping or treating radioactive material

2523011R, G21C 2100

Patent

active

041586816

ABSTRACT:
Sintering nuclear fuel pellets of nuclear fuel oxides having oxygen in stoichiometric excess of the dioxides by passing the nuclear fuel pellets through a reduction furnace having a reducing atmosphere under regulated exposure time or residence time to produce reduced nuclear fuel oxides of desired oxygen content. The reduced pellets are cooled and sent to an intermediate station for checking or holding. The cooled pellets from the intermediate station are sent through a sintering furnace with means for independently regulating the exposure time or residence time in the sintering furnace. Additional features are the independent control of the atmospheres and temperature as well as the humidity concentration in each furnace. Less expensive nitrogen gas may efficiently be used in the process.

REFERENCES:
patent: 3668285 (1972-06-01), DeFreitas et al.
patent: 3673101 (1972-06-01), McKenny, Jr. et al.
patent: 3692887 (1972-09-01), Flipot
patent: 3714061 (1973-01-01), Triggiani et al.
patent: 3766082 (1973-10-01), Tennery et al.
patent: 3829552 (1974-08-01), Reed
patent: 3927154 (1975-12-01), Carter
patent: 3930787 (1976-01-01), DeHollander et al.

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